The FAA is just trying to shrink its data centers and use the two clouds as much as it can — a type of cloud computing known as "hybrid computing." A lot of big organizations are moving toward hybrid computing these days, rather than ditching their own data centers altogether.

The most interesting thing about this announcement: IBM was left out in the cold.

IBM and the FAA have a long and storied relationship, stretching back decades. That's not to say the FAA is dropping its relationship with IBM completely, but it's interesting that of the two clouds FAA chose for this huge consolidation project, IBM didn't make the cut.

IBM is battling big time for its share of the huge-and-growing cloud computing market and is currently placed third, according to Synergy Research.

But Amazon is killing it when it comes to winning business from government agencies with extreme security needs. A couple years ago, it famously won a contract to build a new cloud for the CIA out from IBM.

That cloud has become a big winner, not just for Amazon and the CIA, but all the intelligence agencies are reportedly loving this new cloud, Fortune's Barb Darrow reported.

And, as we predicted in 2013, that win meant Amazon would be in good standing with other government agencies, not to IBM's benefit.

IBM had no comment on the FAA contract but a representative told us: "Through the second quarter of 2015, IBM's cloud revenue was $8.7 billion on a trailing 12-month basis, growing 70%. And IBM's government cloud business is robust and growing."